30 AMP ASCO Transfer Switch, 3 Pole NEMA3R 208V
ASCO ATS Series 300 3ATSA30030CG0F

Commercial enterprises don't always have an employee immediately on hand to switch power loads from the grid to a generator in the event of a power outage. In the time it takes for someone to learn of the outage, arrive at a facility and transfer power, essential equipment could experience critical failures. This is especially true for facilities that maintain cooled or heated units or automatic machinery or computer equipment. An Automatic Transfer Switch reduces the requirement to transfer power loads manually in a number of situations.

What is an Automatic Transfer Switch?

An Automatic Transfer Switch is a switch that toggles the power load for machinery or a facility between a traditional power grid and generator backup. While all generator set-ups come with some sort of switch, an automatic transfer is programmed with logical controls and monitors that sense an interruption in power. The automatic switch first causes generator engines to power up; once generators are up to speed, the switch transfers appropriate electrical loads to generator power.

How does the ASCO NEMA3R 208V Automatic Transfer Switch operate?

The ASCO NEMA3R 208V Series 300 generator switch features a Group G controller that includes enhanced monitoring and switching capabilities. In almost any environment, the switch recognizes a power outage or an abnormal power situation. The switch powers up appropriate generators, waiting for required voltage levels to be reached before transferring machines or facilities to back up power. When grid power is properly restored, the switch returns machines and facilities to traditional power sources. Generators are automatically powered down after an appropriate time lapse.

Features of the ASCO NEMA3R 208V Automatic Transfer Switch

• Compliant with Restriction of Hazardous Substances requirements.
• Meets codes 700, 701 and 702 of the National Electric Code.
• Meets NFPA 110 standards for Emergency and Standby Power Systems.
• Compliant with UL 1008 standards.
• Compliant with CSA standard C22.2.
• Backed by a manufacturer's warranty and available for optional extended warranty.
• Includes options for customization with a field modification kit.

Advantages of your ASCO NEMA34 208V automatic transfer switch

The ASCO Series 300 switches are constructed with rugged materials and designs to hold up under typical stresses in municipal, agriculture, telecom, retail or light industrial environments. The compact size of the switch is easy to install in almost any facility without impacting storage or other areas, and inspection doesn't require removal of parts since functional pieces for the switch are all front facing.

The switch features a graphical display and user-friendly controls, making it easy to maintain and manage, and operating features can be customized for each facility. The design of the solenoid prevents contacts from touching both sources at one time, so you'll never have inappropriate power draw on both generators and grids. Burnouts and malfunctions because loads are transferred to dead sources are not a risk with the ASCO switch; the switch itself draws power from the source before switching operating loads. Optional features, such as historical event logs, help facilities in regulated industries maintain compliance.